1. Division of Endocrinology and Metabolism, CHA Bundang Medical Center, School of Medicine CHA University, Seongnam, Korea.
2. Division of Cardiovascular medicine, Department of Internal medicine, Dankook University Hospital, Dankook University School of Medicine, Cheonan, Korea.
3. Division of Cardiology, National Health Insurance Service Ilsan Hospital, Goyang, Korea.
4. Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea.
5. Department of Biochemistry, College of Medicine, Catholic Kwandong University, Gangneung, Korea.
6. Division of Cardiology, Severance Cardiovascular Hospital, Yonsei University College of Medicine, Seoul, Korea.